26 S&C Instruction Sheet 1041-540
Overcurrent Fault Protection
Click the
Overcurrent Fault
button on any screen to open the
OVERCURRENT FAULT
MENU
screen, and then click the
Fault Events
button. See Figure 5.
Fault Events Log
Figure 5. The
OVERCURRENT FAULT: Fault Events
screen.
The
OVERCURRENT FAULT: Fault Events
screen shows a chronological listing of
fault-related events for the switch(es). The record for each event includes the time, the
switch number (if applicable), the type of event, the switch control’s interpretation of
the event, and the action taken.
This log includes four pages of data. Once the log is full, each new event overwrites
the oldest event in the log. To find the most recent event, look for the message with a
timestamp that is older than the time for the message above it.
This screen includes two columns:
Date/Time……MSec
This is the time (to the nearest 6.25 milliseconds) when the event was logged. The switch
control logs the event after the fault event and all described actions are completed.
This is the event message, which describes the event, the assumption the switch control
made about the event, and the action(s) taken. These messages are explained below.
Note:
For 5802/5803 controls, each event message is specific to one switch/circuit and
is preceded by either “Sw1:” for Switch 1 or “Sw2:” for Switch 2. When both circuits are
affected, such as by a voltage loss, the message appears twice.
When a line switch has been tripped (opened automatically) by the switch control, the
information on the
OVERCURRENT FAULT
screens can help determine the source and
cause of the problem.
